diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/MLLT.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/MLLT.php | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/MLLT.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/MLLT.php new file mode 100644 index 0000000..05aa6a0 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/MLLT.php @@ -0,0 +1,169 @@ +<?php +/** + * PHP Reader Library + * + * Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * - Neither the name of the project workgroup nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * @package php-reader + * @subpackage ID3 + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Id: MLLT.php 75 2008-04-14 23:57:21Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ID3/Frame.php"); +/**#@-*/ + +/** + * To increase performance and accuracy of jumps within a MPEG audio file, + * frames with time codes in different locations in the file might be useful. + * The <i>MPEG location lookup table</i> frame includes references that the + * software can use to calculate positions in the file. + * + * The MPEG frames between reference describes how much the frame counter should + * be increased for every reference. If this value is two then the first + * reference points out the second frame, the 2nd reference the 4th frame, the + * 3rd reference the 6th frame etc. In a similar way the bytes between reference + * and milliseconds between reference points out bytes and milliseconds + * respectively. + * + * Each reference consists of two parts; a certain number of bits that describes + * the difference between what is said in bytes between reference and the + * reality and a certain number of bits that describes the difference between + * what is said in milliseconds between reference and the reality. + * + * There may only be one MLLT frame in each tag. + * + * @todo Data parsing and write support + * @package php-reader + * @subpackage ID3 + * @author Sven Vollbehr <svollbehr@gmail.com> + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Rev: 75 $ + */ +final class ID3_Frame_MLLT extends ID3_Frame +{ + /** @var integer */ + private $_frames; + + /** @var integer */ + private $_bytes; + + /** @var integer */ + private $_milliseconds; + + /** @var Array */ + private $_deviation = array(); + + /** + * Constructs the class with given parameters and parses object related data. + * + * @param Reader $reader The reader object. + * @param Array $options The options array. + */ + public function __construct($reader = null, &$options = array()) + { + parent::__construct($reader, $options); + + if ($reader === null) + throw new ID3_Exception("Write not supported yet"); + + $this->_frames = Transform::fromInt16BE(substr($this->_data, 0, 2)); + $this->_bytes = Transform::fromInt32BE(substr($this->_data, 2, 3)); + $this->_milliseconds = Transform::fromInt32BE(substr($this->_data, 5, 3)); + + $byteDevBits = Transform::fromInt8($this->_data[8]); + $millisDevBits = Transform::fromInt8($this->_data[9]); + + // $data = substr($this->_data, 10); + } + + /** + * Returns the number of MPEG frames between reference. + * + * @return integer + */ + public function getFrames() { return $this->_frames; } + + /** + * Sets the number of MPEG frames between reference. + * + * @param integer $frames The number of MPEG frames. + */ + public function setFrames($frames) { $this->_frames = $frames; } + + /** + * Returns the number of bytes between reference. + * + * @return integer + */ + public function getBytes() { return $this->_bytes; } + + /** + * Sets the number of bytes between reference. + * + * @param integer $bytes The number of bytes. + */ + public function setBytes($bytes) { $this->_bytes = $bytes; } + + /** + * Returns the number of milliseconds between references. + * + * @return integer + */ + public function getMilliseconds() { return $this->_milliseconds; } + + /** + * Sets the number of milliseconds between references. + * + * @param integer $milliseconds The number of milliseconds. + */ + public function setMilliseconds($milliseconds) + { + return $this->_milliseconds; + } + + /** + * Returns the deviations as an array. Each value is an array containing two + * values, ie the deviation in bytes, and the deviation in milliseconds, + * respectively. + * + * @return Array + */ + public function getDeviation() { return $this->_deviation; } + + /** + * Sets the deviations array. The array must consist of arrays, each of which + * having two values, the deviation in bytes, and the deviation in + * milliseconds, respectively. + * + * @param Array $deviation The deviations array. + */ + public function setDeviation($deviation) { $this->_deviation = $deviation; } +} |